PTFE · polytetrafluoroethylene (Teflon) English Name: polyvinylide fluoride, abbreviated as Teflon, PTFE or F4; Commonly known as: Plastic king. PTFE is a high crystallinity thermoplastic polymer, which is a variety of fluoroplastics with large quantity and wide use. Can be molded or extruded Forming, making tubes, rods, belts, plates, films, etc. PTFE (white): made of less than 1% of the additives added by PTFE, which belongs to the modified PTFE. All features except PTFE Besides, the surface finish is better and the shape change is smaller, permeability is smaller, and the recovery of heavy pressure is good at high temperature.